Answer: Time taken by a sound impulse to travel through an aluminum rod 25 kilometers long is 4.9 seconds.
Solution:
Length of aluminium rod = 25 km = 25000 m (1 km=1000 m)
Time taken by sound to travel through aluminium = 5100 m/s (from the table given)
time taken =
Hence, the correct option is 4.9 seconds.
nononono JUST NO NOOOOOOOOO
True because I had the test
If the temperature of a fish population increases then, the population of fish will increase because the fish like warmer areas to breed and lay eggs.
I'm not sure if this is correct. But always use IF THEN and BECAUSE when writing a hypothesis
Answer:
it may be electron, atom or ions depend on the nature of the substance and the character of reaction
like :- particles per mole, coulombs per electron
